Convert //chrome from scoped_ptr to std::unique_ptr

chrome/utility/image_writer/image_writer.h

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CHROME_UTILITY_IMAGE_WRITER_IMAGE_WRITER_H_
 #define CHROME_UTILITY_IMAGE_WRITER_IMAGE_WRITER_H_
 
 #include <stdint.h>
 
+#include <memory>
 #include <vector>
 
 #include "base/bind.h"
 #include "base/callback.h"
 #include "base/files/file.h"
 #include "base/files/file_path.h"
-#include "base/memory/scoped_ptr.h"
 #include "base/memory/weak_ptr.h"
 #include "build/build_config.h"
 
 #if defined(OS_WIN)
 #include <windows.h>
 #endif
 
 namespace image_writer {
 
 class ImageWriterHandler;
@@ skipping 54 matching lines @@
   base::File device_file_;
   int64_t bytes_processed_;
   bool running_;
 
 #if defined(OS_WIN)
   std::vector<HANDLE> volume_handles_;
 #endif
 
 #if defined(OS_MACOSX)
   friend class DiskUnmounterMac;
-  scoped_ptr<DiskUnmounterMac> unmounter_;
+  std::unique_ptr<DiskUnmounterMac> unmounter_;
 #endif
 
   ImageWriterHandler* handler_;
 };
 
 }  // namespace image_writer
 
 #endif  // CHROME_UTILITY_IMAGE_WRITER_IMAGE_WRITER_H_